如图,在RT△ABC中,∠C=90度,BC=6,AC=3,过点B作以点A为圆心,AC为半径的圆A的切线,切点为D,延长CA交圆于点E,交切线BD的延长线于点F,连接DE. (1)求证:ED∥AB
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![如图,在RT△ABC中,∠C=90度,BC=6,AC=3,过点B作以点A为圆心,AC为半径的圆A的切线,切点为D,延长CA交圆于点E,交切线BD的延长线于点F,连接DE. (1)求证:ED∥AB](/uploads/image/z/6974460-36-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8RT%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0C%3D90%E5%BA%A6%2CBC%3D6%2CAC%3D3%2C%E8%BF%87%E7%82%B9B%E4%BD%9C%E4%BB%A5%E7%82%B9A%E4%B8%BA%E5%9C%86%E5%BF%83%2CAC%E4%B8%BA%E5%8D%8A%E5%BE%84%E7%9A%84%E5%9C%86A%E7%9A%84%E5%88%87%E7%BA%BF%2C%E5%88%87%E7%82%B9%E4%B8%BAD%2C%E5%BB%B6%E9%95%BFCA%E4%BA%A4%E5%9C%86%E4%BA%8E%E7%82%B9E%2C%E4%BA%A4%E5%88%87%E7%BA%BFBD%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9F%2C%E8%BF%9E%E6%8E%A5DE.++++++++++++++++%281%29%E6%B1%82%E8%AF%81%EF%BC%9AED%E2%88%A5AB)
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